Bag-forming machine.



No. 717,828. PATBNTBD mm, 1903.V

L. P. PALBS. Y BAG Pomme. MACHINE.

AI'PLIUATIOH'HLED JAN.' 1a, 1902.

no mum..-

' 7 sums-SHEET 1.

@limi No. 717,823. PATENTED JAN; 6, N03.

- L. F. FALES.

BAG FORMING MACHINE. APPLXOATION FILED JAN. 1a, 1902.

'r SHEETS-SHEET z.

N0 MQDEL No. 717,828. PAT-BEND JANL', 1903.-

L. P. mms.` f

BAG-FORMING MAoHNB.

APPLIVUATION FILED lJANt 13, 1.902*

'l' SHEETS-SHEET 3.

N0 MODEL.

L. F. FALES.

' BAG FORMING MACHINE.

- APFLIGATION FILED JAN. 13, 1902. N0 MODEL. 7 SHEETS-SHEET 4.

PATENTED JAN. 6, 1903.

mala-l INIIIIIIHIII lllllllllllllll llllll llllli ...Quill-m l IIIHIHIHIIIIHIII @III- 10.717,828. PATENTBD JAN. 6,1903;

L. F. FALBS. Y 'BAG PURMINQMAGHINE.

AIPLIUATION FILED JAN. 13, 1992.

1 SHEETS-SHEET 5L H0 MODEL.

mi mams pms mom. wmscvcu, D. c.

3. 0 9 1 6, N A. J ,D E mi N E mi A D.. Nm N1 Tlv Hm www A EMM MGE Nu .IP PMM Lmm FG Nm Bu 8.. n 8, 7 l 7 o. N

v sHBBTs-sHBm e.

N0 MODEL.

u /OV l @3765073 P leww jmg s,

Na. 7174823. PATENTED JAN. l6, 190s. y L. f'. FALES. Y

BAG PORMI'NG MACHINE.

APPLIUATION FILED JAN. 13.1902. v N O MODEL. SHBETSv-SEEET 7.

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UNITED STATES I LEVIS F. FALES, OF WALPOLE, MASSACHUSETTS;

BAG-FORMING MACHIN.

.SPECIFICATION forming part of Letters Patent No. 717,828, dated Tauary 6, 1903. Application filed January 13, :1902. Serial No. 89,445. (No modal.)

T0 all whom, t may concern:

-Beitknown that I, LEWIS F. FALES, of Walpole, county of Norfolk,and Stat-e of Massachusetts, have invented an Improvementin Bag-Forming-Machines, of which the follow-V ing description, in connection with the accompanying drawings, is a specification, like let-1.;

completed bag'from the machine, the entireV operation being automatic after the feeding of the blank.

The machine is especially intended for making bags from sheets which have been previously printed orornameuted, so thatit is im practicable to use a web of materal,and a further purpose of the invention is to supply the bags open and ready to be filled, so that the machine can be used in establishments where the material is weighed and packed, the bag making, weighing, and packing being carried on at'thesaine time.

The machine embodying` the invention is provided with one or more traveling formers, as they may be called, there being, preferably, a number of these formers upon which the bags are shaped, and the machine is provided with a feeding device consisting of Va traveling member adapted to engage the sheet of paper presented to the machine at the proper time and to carry the same into a position to be engaged by one of the formers in the travel thereof, the said feeding device having combined therewith means for producing a fold or crease along one edgeof the sheet as the said sheet is carried forward into the path of the former.y The sheet With the crease `thus. formed therein is engaged by the former and carried forward thereby, both sides of the said sheet projecting beyond the surface of the former, which engages it, and being actedupon in the travel of the former by devices which may be termed wipers,7 which engage the projecting portions of the sheet and fold the same down along the sides of the former. The sheet is so positioned that in this folding operation the portion of the sheet which has been previously creased or turned over (which stands substantially at aright angle to the body of the sheet) will fold around the side of the former opposite that which en gages the sheet, and the opposite edge of the sheet is acted upon by another wiper, which is arranged to move along the said opposite side of the former and at the same time to travel therewith for a certain distance, so that the said edge of the sheet forms a liap which is carried over the previously-creased edge, thus causing the papervto be completely wrapped around the former, with the edges overlapping. In conjunction with the feeding mechanism there isa pasting device,which applies paste along the edge of the sheet, so that the flap aforesaid (which is the part pasted) when wiped over the said folded portion Will adhere thereto, thus completing the tubular `body portion of the bag. The surface of the sheet which is first engaged by the former is arranged to be actedupon by a member which linoves toward the former, so as to hold the surface of the sheet thereon, the said member v.also contribn ting in the finishing operation-that is, the folding in and pasting of the bottom of the bag-eas will be hereinafter described. At the end of the wiping operation, which completes .the tubular body portion of the bag, the overlapping edges Where the paste has been applied are engaged by a clamping member, which is adapted to move rtoward the former so as to engage and press together the said overlapping edges, the said clamping member remaining in engagement `therewithl during the subsequent operations.

folding or tucking the same into position along 4 the end of the former.

This leaves the paper projecting beyond the former along three sides thereof, and in the further movement of the former two of the sides of the paper are acted upon by wipers or folding devices, which move toward the projecting part of the paper from the opposite sides, thus folding in the iaps on opposite sides and also forming a flat projecting flap at the last side where the paper projects. This projecting flap lies in contact with the member which has previously been described as employed to hold t-he blank upon the former, the surface of said member forming a support for the said flap, which is then acted upon by a paste-roll, which is moved into contact with it as the former travels past. The member, which also constitutes the support for the said flap, then has a slight lateral movement relative to the former to carry the same past the end of the former, turning the said flap over the said member, which is in the form of a Hat piece, and then moving in a direction parallel to the end of the former and folding the previously-pasted flap into place and resting snugly against the same to hold the iiap until the paste has set. At a certain period in the operation the said member is moved to release the end of the bag and the former comes into the path of a stripping device, Which consists of a pair of rollers adapted to engage the bag at opposite sides of the former and to rotate with relation thereto, thus acting upon the sides of the bag to remove or strip the same from the former. The said rollers are mounted on a traveling frame which is adapted to travel with the former for a distance sufficient to permit the action of the rollers to remove the bag, the said rollers then being released from the former and returned to their normal position ready to act upon the bag on the next former of the series. The rollers, except for their rot-ation, are stationary with relation to the former and act to slide the bag olf the former without compressing or crushing the bag, so that the bags are delivered from the machine open and ready to be filled.

In the construction shown as embodying the invention there is a gang of formers, each ot' which is provided with the holding devices for the bag. These holding devices travel With the foi-mers; but the wipers, tucker, Jac., which form the bag-body, do not travel with the formers, but act upon the blank as the formers travel past them. By this construction a number of different operations may be performed at the same time, certain instruinentalities acting in conjunction with one former While other instrumentalities are acting in conjunction with another, thus greatly increasing the output Without complicating the machine by unnecessary duplication of parts.

In packing certain articles in which the specific gravity varies with variations in atmospheric conditions, dre., it is desirable that the size of the bags should be varied at short notice where the articles are being packed by weight. One feature of the present invention is embodied in means for adjusting or varying the size of the former, the arrangement being such that the several formers can be simultaneously and equally adjusted by means of a single adjusting member without stopping the operation of the machine. In packing coee, for example, in pound packages if it is found in the weighing-room that the coffee is running light, so that a larger package is needed to hold the necessary amount, the attendant operating the machine can slightly enlarge the formers, so as to produce larger bags Without waste of time and, in fact, Without even stopping the machine. The means for forming the preliminary crease are correspondingly adjustable, so that the crease will come in line with the edge of the former under all conditions.

Figure 1 is a side elevation of a machine embodying the invention, showing the side Where the blank is fed. Fig. 2 is an enlarged sectional detail showing the means for making the primary fold in the blank. Fig. 3 is a side elevation showing the opposite side of the machine from that shown in Fig. 1. Fig. 4 is a top plan View. Fig. 5 is an endelevation; Figs. 6 and 7, details further illustrating the mechanism shown in Fig. 2. Fig. 8 is a detail, on an enlarged scale, partly in section, showing the operation of the devices which wrap the blank around the former and fold in the end thereof; Fig. 9, a similar view showing these parts in a differentposition; Fig. 10, a section through one of the cam-grooves, showing in different positions the devices which travel with the formers; Figs. 11 and 12, details showing the construction and operation of said parts; Fig. 13, a detail showing in plan the means for adjusting the formers, and Fig. 14 a detail view of the delivering device.

The blank A is fed to the machine upon a table or support d, being laterally positioned with relation to said table by means af an adjustable stationary gage am and longitudinally positioned by means of movable gage members b, which normally stand in front of the edge of the blank which is pushed forward into engagement with said members. Prior to the actual feed of the blank from the table a to the former afold is made along one edge of the blank, the table having a crease-forming portion d20 so arranged that one side of the blank will project beyond the edge of the said portion, as best shown in Fig. 2, so as to be acted upon by folding -devices c and c2, the former being arranged to bend the blank down across the edge of the said portion d20 and the latter subsequently to carry the bent-down flap around under the said portion, so as to perfect the crease. During the folding operation the blank A is held in position upon the portion d20 by means of a presser-foot d, which is shown n as normally spring-pressed toward the said portion by means of springs d2, the said presser-foot d being mounted on plungers d3 in a yoke or support d4, which is mounted on an adjustable rod d5 for a purpose to be hereinafter described.

The folding member cis shown as a blade IOO IIO

IIS

mounted on arms c3, connected with a rockshaft c4, which has bearings in lugs c5, mounted on the plungers d3, the said rock-shaft having a crank projection c6, connected by a link c7 with a lever es, pivoted on the frame F of the machine and adapted to be acted upon through a link c9 by a cam cm upon the 1 shaft B, the cam being so shaped as to produce a rapid oscillation of the lever o8 at the proper time in the operation of the machine. The arms c3 are provided with stops or projections 030, which are arranged to come into contact with a portion of the lugs c5, so that when the parts are in their normal position the link c7, acting through the projection o6, which is Aheld stationary with relation to the presser-foot d by means of the projections c3, will hold the presser-foot lifted from thel table to permit the insertion of the blank. As soon, however, as the cam 01 begins to act the projections e30 will be moved out of engagement with `the lugs c5, permitting the presser-foot d to descend to hold the blank A, while the further movement causes the folding-blade c to slide down past the edge of the creasing portion d20 of the table a, carrying with it the projecting edge of the blank A, as shown in Fig. 2, Where the cam c10 is indicated asin operation. In the return movement of the lever o8 when the link c9 is released by the cam om (this movement being produced by a spring ou) the supplemental folding-blade c2 comes into operation, the said blade being mounted on a rock-shaft c20,which has acrank projection c2,connected,by means of the link 022, with the lever es.

As best shown in Fig. 2, the supplemental folding-blade c2 will move to the right, engaging the bent-down hap of the blank A, so as to carry the same around under the edge of the portion d20, as indicated in Fig. 7. In order that the crease made in the blank may be rounded and also fixed so that the blank will remain bent, the said portion d20 is provided With a projection a2, Fig. 7, which extends beyond the front edge of the said portion and has spring-pressed against it a roller as, shaped to conform to the projection, the said roller being mounted on a spring a4, so as to be spring-pressed against the surface of the blank Where the said blank is folded over the member o?. This roller, in conjunction with the rounded projection a?, rounds and fixes the crease, so that the turned portion of the blank will stand at an angle to the body of the blank, so as to it the former when the blank is subsequently folded around it, so that only three wiping operations are needed to complete the bag-body.

It is practicable in accordance with this invention to adjust the size of the former in order that bags slightly differing in capacity can be made from the same blanks, and the adjustment of the former, as will be hereinafter` described, is accomplished by varying the distance between the side of the former where the blank is received and the side where the ends of the blank overlap, and such adjustment, of course, varies the distance between the point where the blank is folded along one edge of the former and the point where it must be folded along the other edge. The initial fold made during the feed of the blank, however, is depended upon to cause that edge of the blank to Iit the former, and it is therefore necessary that the crease should come adjacent to the edge of the former when the blank is wiped around. This renders it necessary to vary the position ofthe crease to correspond to the variations in the size of the former. As herein shown, therefore, the mechanism for producing the crease, which mechanism includes the folding-blades c c2, the presser-foot d, and the roller a3, together with the portion a2@ of the table a, is adjustable with relation to the main portion of the table, the several parts all being mounted on the rod d5, which is supported and longitudinally movable in lugs d5, which project below the table. The said rod d5 is shown as provided with an internal screw-thread d, adapted to receive the threaded stem (i7 of an adjusting-screw d8, which is rotatably mounted but longitudinallystationary in a lug a6 below the table. By turning the said adjusting-screw d8,the1efore,the position where the blank is to lbe creased can be varied without changing the positionv of the blank, which must, of course, always be the same in order that the said blank when delivered from the table may be in the proper position relative to the former.

After the operations above described have `taken place the creased blank is delivered.

from the table ci toa position where it will be engaged by one of the formers, there being a gang of formers shown as mounted on a traveling carrier, so that they successively pass the feeding position in order to receive the blanks to be formed.

As herein shown, the edge of the blank, which projects beyond the'end of the table and is positioned by the gages b, is acted upon by a reciprocating feed member having a pair of nippers e and e2, mounted on a slide e3, which is connected, b v means of a link e4, with a lever e5, pivoted upon the frame of the machine and connected, through the agency ofa link e6 and elbow-lever e7, with a reciprocating member es, which is acted upon by a cam 'e9 on the shaft C.

link cl3, which in turn is pivotally connected at e1dr with the slide member e3. The two links cl2 cl3 thus constitute a toggle-joint and are connected together by means of a spring @15, which tendsl when the nippers are closed to hold the members of the toggle-joint against IOC IIO

a stop el, the said ni ppers being thrown open, as shown in dotted lines, by the engagement of the link 613 with a stop e, which pushes the connection between the links out of alinement with the spring 615 and causes the nipper-jaws to iiy open, the movement being limited by a stop els, as shown at the righthand side of Fig. 6.

To close the nippers after they have moved to the proper position relative to the blank, the links 612 and @13 are acted upon by a pivoted arm @19, which is given a quick movement through the action of a crown-cam 62, Fig. et, which throws the arm against the links and moves them into engagement with the stop ew. After the blank has been nipped the carrier e3 travels back, the gage members b moving out of the Way at this period in the operation, the said gage members being shown as mounted on the rock-shaft b2, havinga projection b3 arranged to be acted upon by a crown-cam b4 on the shaftB. The cam causes the rock-shaft to be oscillated, so that the gage members swing forward out of the way. While the blank is being withdrawn from the table a by the nippers it is supplied with paste along the under side of one edge by means of a paste-roll j', which lies adjacent to the table a, so as to engage the edge of the blank which is not creased, the blank being held in contact therewith by a presser-roll f2.

While the blank is being withdrawn from the table by the nippers it is carried across the path of one of the traveling formers g, there being a number of such formers mounted on a carrier-disk h, to which is suitably secured a large gear-wheel h2, intermeshing with a gear D2 on the counter-shaft D, and the said shaft D is rotated through a gear D3 meshing with a gear E3 on the main driving-shaft E, upon which is mounted the pulley E2. The reciprocating member is at one side of the path of travel of the formers, so as not to interfere with them, and the parts are so timed that the former reaches the blank just as the nippers are about to let go. To prevent displacement of the blank as the nippers let go, the former is provided with spring-clips Q20, turned up at the ends, so that the blank can slide under them just before the surface of the former reaches it, and the nippers let go when the blank is in engagement with the formers, leaving the blank held by the clips. The blank engaged by the former g extends across the surface of the said former, and as the former travels the said blank is engaged by a holding member i, which is shown as a flat blade mounted upon a pivotallysupported arm i2 upon a rock-shaft i3, which is mounted in the carrier h, the said rock-shaft having a pinion 4 intermeshing with a rack 5, having a cam-roll i6, which travels in a stationary cam-groove il?, formed in a shell is,

suitably supported in the frame of the ma-v chine, so that as soon as the blank has been picked up by the former g the member t' will be forced into contact with the surface of the blank, so as to hold the same in position upon the said former. The holding member also performs several other important functions in the operation of the machine, as will be hereinafter described. In the further travel of the former the blank where it projects beyond the former at opposite sides is acted upon by wipersj and l, each of which consists of a flat spring-plate so situated as to lie adjacent to the side of the former, so as to fold the blank down along the sides thereof as the said former travels between said wipers, as shown at the right-hand side of Fig. 8.

The thickness of the formerg is so proportioned to the position of the creasing portion of the feed-table that the distance between the fold made by the wiperj and the primary crease formed by the appliances hereinbefore described will be equal to the thickness of the former, so that the folded-in portion of the side of ythe blank will slip around the under side of the former, as indicated in Fig. 8. The other edge of the blank, which has been folded down along the side of the former by the wiper Z, is acted upon by a wiper member m, which is arranged tohave a lateral movement relative to the former g and a longitudinal movement with the same, so as to follow and remain in contact with the under or rear surface of the former during a portion of the travel thereof, at the same time traveling across said surface to wipe in the iiap. The said Wiper member 'm is shown as in the form of a spring arm or plate connected with a rock-shaft m2, having a crank-arm m3, which is connected, by'means of a link-m4, with a rocker m5, pivoted at m6 upon a fixed portion of the frame F and having a cam-roll m7, which is adapted to be engaged by a cam g2, which is carried by the former g. In the forward movement of the former, therefore, the said cam g2 engages the cam-roll m7, producing an oscillating movement of the rock-shaft m2, which results in a double movement of the Wiper m, causing the same to travel laterally along the lower side of the former g and at the same time to follow the travel thereof, so that the flap lof the blank A is folded around the lower side of the former and wiped along into contact with the same. The said lower side of the blank is the side which has previously had paste applied to it, as described, during the feed movement thereof, and the pasted portion thereof is carried as shown in dotted lines, Fig. S, into contact with the bent-over portion, which lhas been carried around the other side of the former, as shown, so that the two ends of the blank overlap, with a layer of paste between. At this period in the operation the gripper member fn, which is shown as a spring-supported block at the end of an arm n2, pivoted at n3 on a part of the former, is acted upon by means of a rack 'm5, which meshes with a pinion n4, connected with the hub or spindle of the member n2, the said rack a5 having a camroll ns, which travels in a suitably-shaped IOO IOS

IIO

cam-groove ai, shown as formed in the camwheel '115, stationary with relation to the carrier h. The action of the cam-groove a7 upon forward upon the former the projecting portion thereof is acted upon by a folding member or tucker, as it may be called, (designated by the letter 7c and best shown in Figs. 4 and 5,) the said memberbeing mounted upon a shaft or pinion 102, having a bevel-gear fc3, intermeshing with a bevel-gear 154, mounted on a shaft having a wrist-pin and link connection fc5, the latter being acted upon by a cam 7c upon the shaft D. The said tucker k, oscillating upon its support k2, follows in behind the former g, traveling more rapidly than the former travels, thus catching one side of that part of the paper tube which projects beyond the end of the former at the rear or lower side thereof and folding or tucking the same in upon the end of the former, leaving three projecting flaps', which project beyond the other three sides of the former.

Referring now to Fig. 9, the two projecting flaps at the sides are acted upon, respectively, by wipers 0 and p, which are so mounted as to swing in along the end of the former g from behind, first meeting the said former at a point parallel to the edge thereof, so as to engage the projecting ap, and then swinging in a curved path toward the middle of the former, so as to wipe in and fold down the two flaps one over the other, as shown in Fig. 9, the wipers following the movement of the former far enough to turn the last projecting flap to a position parallel to the end of the former. The said Wipers o andp are so timed that the iiap folded in by the wipero will underlie the fiap folded in by the wiper p, as shown, so that one will lie flat over the other without interference, while the movement of the wipers in the same direction as that of the former causes the folded portion to project beyond the former ready to receive paste.V

tion or flap (supported as will be hereinafter described) is then acted upon by a pasting device s, which consists of a roll mounted on a shaft provided with a bevel-gear s2, the said 'a cam s2l on the shaft C.

shaft being mounted ina bearing formed in a swiveling frame s3, which has bearings s4 upon a shaft which carries a bevel-gear S5 and a sprocket-Wheel S6, which is adapted to be continuously rotated by means of a sprocketchain. The said sprocket-chain 87 is driven by a sprocket 38 on the counter-shaft 89, which in turn is driven by'a. gear S10, which is rotated by means of a sprocket-chain S12, connected with the shaft C, as shown in Figs. 3 and 4. The roll s is supplied with paste from a rotating paste-roll 313, which is mounted in a paste-reservoir S14 and adapted to be rotated by a sprocket-chain, which cooperates with a sprocket 515, Fig. 4, upon the shaft of the roll, it not being deemed necessary to describe specifically the connections through which the sprocket-chain operates. The pasting mechanism is also supplied with intermediate rolls, suitable gears, &c., which are herein shown, but do not need to be described in detail. It will be seen, therefore, that both the roll S13 and the pasting device s are continuously rotated, the device s being supplied with paste and the paste'- being then applied to the flap, which travels along in contact with the device s when the swiveling frame s3 is moved to carry the device 3 out of contact with the roll and into contact with the surface ofthe projecting flap. The swiveling frame s3 is so mounted as to be movable without causing the beveled gears s2 S5 to get out of mesh with each other, `the said frame being pivoted on ICO the shaft, which is provided with the drivvthe said elbow-lever being also connected with a cam member S20, which is given a reciprocating movement through the agency of The said swiveling support or bearing s3 is mounted so as to swing down from the position shown in Fig.

8 to the position sho-wn in Fig. 9, in which the rolls will come in contact with the projecting flap, said roll s then being swung out of the Way as soon as sufficient paste has been applied.

' As indicated, the wipers o andp lie in contact with the folded-in portion to hold the same flat While'the pasting device sdescends, these wipers not receding until the iiap is engaged by the pasting device, which then servesto maintain the fold. As the pasting device recedes, however, it is necessary to prevent the forwardly-projecting flap, which has received the paste, from being pulled away with the paste-roll, which would tend to unfold the end, and it is also necessary to to unfold.

therefore, the machine is provided with supplemental retaining-wipers, as they may be called, these Wipers being indicated, respectively, by the reference-letters q and r, and being situated adjacent to the paste-roll and so timed as to move inward over the end of the former g as the pasting device recedes. By this time the former is traveling past the wipers q and r, which therefore engage and maintain the folds made by the Wipers o and and hold the material snugly against the end of the former during the operation of turning over and folding in the pasted iiap,b

which will be hereinafter described. Owing to the travel of the former, the Wipers q and r do not reach the middle portion of the projecting flap where the paste has been applied until the pasted portion has traveled beyond them, so that they do not become fouled.

The wipers o and p are mounted, respectively, on rock-shafts o2 and p2, which are connected together by means of a link o3, the rock-shaft o2 having a radial projection o1, which is connected with a rod 05, having a forked support upon the shaft B, and a camroll o, which is arranged to be acted upon by the cam o7 on the said shaft. The action of the cam is such as to rock the shaft 02, which, as indicated in Fig. l, will cause a movement of the wiper o in one direction and a movement of the wiper p in the opposite direction, the said parts thus being carried from the position shown in Figs. l and 8 to the position shown in Fig. 9, wiping in the projecting sides of the paper tube and folding them Hat against the former one over the other, as previously described. The holding members q and r are mounted, respectively, on rock-shafts q2 and r2, having radial projections connected together by means of a link r3, the rock-shaft q2 having a radial projection Q3 connected with a rod q1, which is operated by a cam g5 on the shaft D, the construction and operation being substantially the same as that of the wipers o and p. After the paste-roll s has applied kpaste to the flap and has been removed by the action of its swiveling frame S3 the next operation is that of folding in and pressing the projecting flap against the end of the bag formed as described. To accomplish this, the member is utilized, the machine being provided with means for causing various movements of said member for the purpose. In order to turn the flap, said member is arranged to be moved laterally with relation to the former g, the construction being best shown in Figs. 10, ll, and l2, which illustrate the means for mounting the pivotal support 2 for the said member As shown, the said member-t'2 is secured upon a shaft 3, having a pivotal support in an arm 11, which is secured to the carrier-disk h, the said shaft 3 having a squared portion which passes through the pinion 1, so that the frame 2 may be longitudinally moved with relation to said pinion 4 and at the same time oscillated in the rotation of said pinion, as previously described.

The shaft 3 is provided with a collar 10, having a groove adapted to receive a forked member 12, pivotally connected with a projection 13 from the disk hand provided at its opposite end with a cam-roll 11, which runs in a cam-groove formed in the periphery of a cam-Wheel 15. At the proper period in the operation the cam-groove causes a movement. of the forked member 12, which produces a corresponding longitudinal movement of the shaft 3, carrying the member beyond the end of the former g. Prior to this longitudinal movement, however, the member is released from the blank on the former, the movement being only sufficient to prevent damage tothe paper. This movement is produced by the action of the cam-roll 6, which lneets a slight incline 70 in the cam-groove 7. The longitudinal movement, which is very slight, (only sufficient to move the member far enough to slide past the end of the former and turn in the liap,) is immediately followed by a further oscillating movement of the shaft 3, produced by the action of theincline 71 on the cam-roll 6, which movement causes the membert' to travel past the end of the former g, as shown at the left-hand side of Figs. 8, 9, 10, the longitudinal and lateral movement of the said member thus turning over and folding down the previouslypasted pointed flap and completing the end or bottom of the bag.

In order that considerable pressure may be maintained upon the completed end of the bag during the remainder of the travel of the former prior tothe stripping or delivery of the bag, the member is arranged to be acted upon by a stiff spring 16, which is interposed between a shoulder at the end of the rod 3 and the grooved collar 10, (the said collar being free to move longitudinally on the rod, except as controlled by the spring,) the throw of the collar being more than suficient to carry the member 't' into contact with the end of the former, so that thespring 16 is compressed between the shoulder at the end of the rod 3 and the said collar, thus exertinga pressure which holds the member against the end of the former. The action of this spring tends to move the disk h endwise along its bearing on the stationary shaft G through the middle of the machine, and in order to take up this thrust and prevent undue friction the machine is provided with rollers 17, which are interposed between the disk 71, and a stationary portion of the frame F, Figs. 4: and 5, thus constituting an antifriction device Which prevents the disk from binding in its bearing.

The member fi, as Will be seen from the foregoing description, constitutes the means for holding the blank upon the former, supporting the flap during the pasting operation, turning in the flap to complete the bag- IOO IIO

bottom, and clamping the iiap for a sufficient length of time and with sufficient pressure to insure the setting of the paste. This greatly7 simplifies the construction. since only two cams are required to operate said member. In this connection it. may be noted that all the other instrumentalities which enter into the operation of forming the bag, as well as the delivering devices, which -will be described hereinafter, are common to' all the formers, so that the several operations required may be performed substantially at the same time, the several instrumentalities operating upon different bags at once, thus greatly increasing the output. The bag formed as thus described and havi ng its pasted portions held together duringa portion ot'fits travel until the paste has time to d ry is then presented to the delivering or stripping devices, the various cams which operate the gripper member n and the holding member i being so shaped as to restore the said meinbers to their normal positions before the former reaches the delivery-point.

The delivering devices are best shown in Figs. l, 5, and 14:, the devices which act directly upon the bag to strip the same od the former g comprising rollers t, rotatably mounted in a frame u, carried by an arm u2, which is arranged to be swung in the direction of movement of the formers g by' means of a lever n4, which is connected with the arm u2 througha link its, the said lever 'iL-4 being connected with a rock-shafted, havinga rod n connected therewith bya leveruT and arranged to be operated byacam uson the shaft B. The said cam 'its is so timed as to start the movement of the arm u2 at the time when a former reaches the same and to continue the movement a certain distance at a speed equal to that of the former, the former, as best indicated in Figs. 5 and le, passing in between the stripping-rolls i, the frame u then taking up its movement, so that the said rollst travel with the former during a portion of the movement thereof, being subsequently restored after the bag is stripped from the former. The two rolls t are normallyinsuch position that the former can pass between them, Fig. 14, without coming in contact with either, and as the frame takes up its movement to follow the former the rolls t are pressed together toward the surface of the former and rotated, thus engaging the opposite surfaces of the bag and by'a rolling movement stripping the bag endwise from the former and delivering it from the machine.

As herein shown, the rollers are rotatably mounted upon spindles connected with elbow-levers t2, pivotally supported on the frame u and having members t3, which project across the path of a projection t1, arranged to be acted upon by a lever i5, which is pivotally connected with the frame u and arranged to be acted upon by a cam 11, fixed ou the frame F of the machine. The said elbow-levers i2 are normally held against theV said projection 154 by means ot springs i7, and the positionv 'of theY projection when acted upon by the' cam 'L6 is such as'to keep the rollers separated from each other a distance sufficient to permit the former g to pass between them. As soon, however, as said former has passed between them and the frame u takes up its movement to follow the former the lever i5 passes out of engagement with the cam-surface t, thus permitting the rolls to move toward each other in response to the action of the springs 15T, the said rolls thus coming into contact with the opposite sides of the former, (or, strictly speaking, the bag which is on the for1ner,) being springpressed against the said bag at opposite sides. The said rollers may advantageously be covered with rubber or similar material for the purpose of frictionally and yieldingly engaging the paper.

During the forward movement of the frame u the rollers t are caused to rotate, each roller being herein shown as provided with a gear is, which is in mesh with a gear t on a shaftw, theY said shaft in turn being provided with a beveled gear 12, the gears i12 intermeshing with corresponding beveled gears 13 upon a rotatable shaft 1514, which has a bearing on the frame u. The said shaft 14, which travels with the frame it, is provided with a spur-gear i515, which is in mesh with a curved rack 1516, mounted on the frame ofthe machine, so that as the gear 1515, carried by the frame n, travels along the said curved rack the shaft t is rotated, producing a corresponding rotation of the rolls t, which work on opposite sides of the bag and strip the same from the former. As soon as the bag is stripped from the former the lever i5 is again operated to separate the rollst by a cam-surface 17, Fig. l, andthe return movement of the frame u takes place, the former then having passed out from between the rolls if, and at the end of such return movement the rolls are again separated, ready to receive the next former between them. By this method ot delivery the bags come from the machine open and ready to be filled.

As has been previously stated, the formers g are adjustable in size, so that while using the same blanks for the formation of bags slight variations may be made in the capacity of the bags while the machine is in operation, the adjusting devices being so arranged that all the formers can be simultaneously and equally adjusted by'one movement, so that if the capacity of the bags is to bc varied it becomes necessary only to make one adjustment for the former-s and a corresponding adjustinent for the devices which produce the preliminary crease in the blank, as previously described.

Referring to Fig. 13, each former g is made in two parts, there being a supplemental part g3., having a base portion g4, fitted upon a dovetailed guide g5, which is secured to the IIO member i.

face of the disk 7L, the main portion Q of the former being also rigidly secured to the said disk. It is obvious, therefore, that if the part Q3 is moved along said guide relatively to the part Q the width of the former will be correspodingly varied, and in order that the same variation maybe produced in all of the formers by one operation each member Q3 is shown as connected with an elbow-lever Q6 by means of a link Q7, the several elbow-levers having members QS provided with camrolls Q, which travel in a channel Q10, formed in a sleeve or member Q12, which is longitudinally movable with relation to the stationary shaft G or supporting member, which passes through the middle of the machine and supports the several stationary cams, as well as affording a bearing for the disk h. The said collar Q12, which is non-rotatable, is connected with a lever Q13, Fig. 5, the said lever being pivoted at Q11 to a fixed portion of the frame and connected at the opposite end with a rod Q15. The said rod Q15 extends through one of the side members of the frame F and is screw-threaded and provided with an adjusting screw or wheel Q16, so that by Aturning the same a longitudinal movement of the rod Q15 is produced and a corresponding movement of all the elbow-levers Q6,Which are connected, as described, with the supplemental portions Q3 of the formers Q, so that the width of the formers can be varied in this Way.

By properly proportioning the adjusting means for the formers and the adjusting means for the creasing portion of the table to determine the position where the preliminary crease is made the arrangement can be such that by turning both adjusting-wheels an equal distance the adjustments will correspend, and it is obvious that both these adjustments can be made without necessitating the stopping of the machine.

The operation of the machine may be briefly summarized as follows: rIhe blanks fed to the machine are held by the presser-foot While the preliminary crease is formed and upon being released are pulled forward by the feedfingers, the preliminary crease being rounded, and paste applied to the opposite edge of the blank as the same travels forward. Picked up by the former and held by the member t' the blank passes between the side wipers, so that it lies snug against three sides of the former, while the turned edge is substantially parallel to the fourth side. That part of the blank which projects beyond the side of the former is then acted upon by the wiper, which follows the former and travels across the same, the pasted edge of the blank thus being caused to overlap the turned edge. The gripper then engages the overlapping parts and the bagbody is complete. Further on the tucker k and wipers 0 and p fold three sides of the bagbody snugly against the end of the former and form the pointed flap which lies fiat on the The paste-applying device then swings into contact with the pointed flap, and as it swings back, leaving a layer of paste, the supplemental wipers q and r swing in to prevent the end from unfolding and to hold the bag whilethe endis finished bythe member 7,'. The said memberz' then moves beyond the end of the former, pushing the pointed flap before it until said ap is at a right angle to the end of the former, and then moves parallel to the end of the former, carrying the pointed flap with it. The spring connected with the memberi presses the same firmly toward the end of the former to hold the pasted surfaces together and the bag is finished. Upon reaching the delivering devices the member z' is restored to its normal position and the rolls istrip the bag from the former and deliver it open and ready to be filled.

It is not intended to limit the invention to the specific construction and arrangement shown and described,since modifications may be made without departing from the invention.

I claiml. In a bag-forming machine, a former; means for presenting a blank to the said former; a creasing device forturning up one edge of the blank until it stands at an angle to the body of the blank prior to the presentation thereof to the former; and means cooperating Wi th the former to fold the blank around the former and bring together the turned and unturned edges of the blank.

2. In a bag-forming machine, the combination with a former and means for folding a blank around said former; of a device for making a bend along one side of the blank to cause said side to stand at an angle to the body of the blank prior to the action of the folding means; and a device for rounding said crease, as set forth.

3.. The combination with the crease-forming portion of the feed-table; of means for folding the blank over said crease-forming portion; a rounded projection beyond the feed-table in the direction of feed movement of the blank; and a roller spring-pressed toward said projection to engage the blank and shape the crease.

4. In abag-forming machine, the combination with the former and means for folding a blank around the same to form the bag; of a feed-support for the blank; a crease-forming portion connected with said feed-support and so positioned that the edge of the blank projects beyond the same; means for folding the projecting edge of the blank around said creaseforming portion to turn the blank along the edge until the edge portion stands at an angle to the body portion; means for applying paste to the uncreased edge of the blank; and a feeding device operating after the crease has been formed for presenting the creased and pasted blank to the former, as set forth.

5. The combination with the former and TOO IIO

presentation of the blank to the'former, as set-- forth. Y

6. The combination with a feed table or support for the blank; of a former to Which the blank is presented from the said support; means for adjusting the size of the former; creasing mechanism for folding one edgeof the blank until the edge portion of the'blank stands at an angle to the body portion thereof While the said blank is supported upon the feed-table; and means for adjusting the said creasing mechanism with relation to the table to correspond to the adj ustm'entof the former, as set forth.

7. kIn a bag-forming machine, a former; means for presenting a blank to said former; means for turning up one edge of the blank until it stands at an angle to thebody of the blank prior to the presentation thereof to the former; adjusting devices for said means to vary the location of the crease thus formed; means for adjusting the size of said former to correspond to the adjustment of the means for turning up the edge of the blank; and means cooperating with the former to fold the blank around the former and bring together the turned and unturned edges of the blank.

8. The combination with the feed-table; of a crease-forming portion beyond Whichthe blank projects; a folding-blade movable past the crease-forming portion transversely to turn the projecting portion of the blank over the crease-forming portion; and a second folding-blade movable past the crease-forining portion to engage the turned portion of the blank and move it to a position substantially parallel to the main portion ofthe blank. Y

9. The combination With the'feed-table; of a crease-forming portion beyond which the blank projects; a folding-blade movable past the crease-forming portion transversely; a`

ver to operate the blades successively.

10. The combination with the feed-table; of crease-forming devices comprising a creasevforming portionto underlie the blank, and folding-blades to turn the blank over said crease-forming portion; and a 'support for said crease-forming devices adjustable with lrelation tothe feed-table.

11. The combination with the feed-table; of creasing devices comprising a crease-forming portion, folding-blades, and a presser-foot; a

support for said devices adjustable with relation to the table; a lever'for operating the folding-blades and presser-foot; and link connections between said lever and the parts op- Y erated thereby.

12. In a bag-forming machine; a former; means for presenting a blank to the said former; means for turning up one edge of the blank until it stands at an angle to the body of the blank prior to the presentation thereof to the former; a paste-applying device to aplplyk paste to the other edge of the blank; and

means coperating with the former to fold the blank around the former and bring together the turned and pasted edges of the blank.

13. The combination with the feed-table; of creasing devices to fold one edge of the blank supported on the table at an angle to the body of the blank; a paste-roll underlying the blank near the other edge thereof; a traveling member provided with nippers to seize the' blank and draw it from the table; and a traveling former to receive the pasted and folded blank, a's set-forth.

14. The combination with a reciprocating feed member; of nippers connected therewith; a toggle-joint and spring for operating said nippers; a stop cooperating with said joint to open the nippers; and a lever coperating with said joint to close the nippers.

l5. The combination with a traveling former; of means vfor presenting a blank to said former; means for folding said blank around said former; means for tucking in the projecting portions of said blank and causing the tucked-in portions to lie in contact With the end of the former With a projecting tlap parallel to said end; a support for said flap traveling with the `former; a pasting device mounted on a swiveling frame; a paste-roll IOO from which said roll receives paste; and Y means for moving said frame to carry said device from said paste-roll to the said Hap resting on said support as the former travels past Y and restore the same after the paste has been applied to the said Iiap.

' 16. The combination with a traveling former; of means for presenting a` blank to said former; means for turning up one edge of said blank until it stands at an angle to the body of the blank; means for applying paste to the blank along the edge opposite to the edge which is turned up, said turning and pasting means operating on the blank before it is presentedto the former; wipers to engage the blank'where it projects beyond the l means for feeding blanks having their edges thus turned to said formers successively; means mounted on a support stationary with relation to said formers to operate on the blanks to form the bag-bodies as the formers travel past and means carried by each former 'ro clamp the overlapping portions of the bagbody, as set forth.

18. The combination with a former; of means for Wrapping a blank around said former; means for tucking and folding the blank where it projects beyond the former, to fold in three sides and form a flap projecting from the fourth side; means for applying paste to said flap; and a single device traveling with the former to hold the blank, support the flap, turn over and fold in the flap, and clamp the same when thus folded in.

19. The combination with a traveling former to receive a blank; of a device traveling with said former for holding said blank, supporting a portion thereof, folding said poi tion and clamping the same; and means for causing said device to perform the successive operations named.

20. The combination With the traveling former; of a member traveling therewith; a pivotal support also traveling with the former for said member, said member being also movable relative to said support; a cam coperating with said member to` move the said pivotal support to carry the said member to the surface of the former and subsequently beyond said surface; and a cam for producing the movement of said member relative to said pivotal support, as set forth.

2l. The combination With the traveling former; of a member traveling therewith; a pivotal su pport for said member also traveling with the former, said member being also movable relative to said support; a cam coperating with said member to move the said pivotal support to carry the said member to the surface of the former and subsequently beyond said surface; a cam for producing the movement of said member relative to said pivotal support; anda spring through Which said cam acts when producing such movement in one direction, as set forth.

22. The combination With a traveling former; of means for presenting a blank to'one surface of said former; a holding device to engage the surface of the blank and hold the same on the former; Wipers to Wrap the projecting portions of the blank around the former to complete the body portion of the bag; a tucker arranged to travel past the end of the former and tuck in one side of the bagbody which projects beyond the former; Wipers for folding in the opposite sides of the projecting blank; and means for causing the holding member to travel in a direction parallel to the end of the former to fold in the remaining ap, as set forth.

23. The combination with a traveling former; of means for presenting a blank to one surface thereof; a holding member carried by the former and means for moving it into contact with the blank to hold said blank on said surface during the travel of the former; stationary Wipers to fold the projecting sides of the blank into contact with the sides of the former; a traveling Wiper adapted to follow the former far enough to fold in the remaining side of the blank; a gripper traveling With the former to engage the said remaining side after it has been folded; and tucking, folding and pasting devices to complete the bottom of the bag as the former travels past.

24. The combination With the former; of means for Wrapping a blank around the body of the former; means for folding or tucking in three sides of the projecting end of the body portion; a paste-applying device adapted to act upon the projecting flap at the fourth side; and means carried by the former for folding over and clamping said projecting iiap to complete the bottom ofthe bag.

25. The combination With the traveling fo. mer and means for folding a blank around the same to form a tubular body; of a holding device comprising a platemonnted on a frame pivotally supported on the former; means for moving said frame as far as the surface of the former and then past said surface; tucking and folding devices for folding in the blank and forming a Hap adjacent to said plate; a device for applying paste 'oo said flap; and means for moving the holding-device frame longitudinally with relation to the former prior to its movement past the surface thereof, as set forth.

26. In a bag-forming machine, the combination With a traveling former and means for Wrapping a blank around the same to form a bag; of a delivering device consisting of rollers adapted to engage the bag at opposite sides of the former; means for causing said rolls to travel with the former in a direction parallel to the axis of the rollers; and means for rotating the said rollers to strip off the bag, as set forth.

27. In a bag-forming machine, the combination with a traveling former; of means for presenting a blank to the said former; Wipers to act upon the said blank in the travel of the former to fold the blank around the said former and complete the bag; and a delivering device comprising a pair of rollers adapted to engage the bag at opposite sides of the former and to travel in a direction parallel with the axes of said rollers With said former; and means for rotating the said rollers during the travel thereof to strip the bag from the former.

28. The combination with atraveling former and means for forming a bag thereon; of a delivering device comprising rollers to engage the bag at Opposite sides of the former; a traveling frame for said rollers; means for causing said frame to travel with the former; devices for moving said rollers toward the former when the frame begins to travel and awayfrom the former after the bag is stripped;

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masas gears for rotating said rollers; and a stationary rack to operate said gears in the travel of the frame.

29. The combination with a former adapted to receive a blank on one surface, the said blank projecting beyond the sides and one end of the former; of a holding member adapted to engage the blank and hold the same upon the former, the said holding member Aconlprising a plate adjacent to the end of the former; means for folding the blank around the former; means for folding in three sides of the blank against the end of the former and producing a ap Which lies in contact with the plate aforesaid; a pasting device to apply paste to the said flap; means for mov-v ing the holding device past the end of the former and then in a direction parallel thereto to fold over the ap; and a clamping-spring acting upon said holder to clamp the foldedover iiap, as set forth.

30. The combination with the traveling former and means for folding a blank around the same to form a bag-body; of Wipers mounted on supports stationary with relation to said former to tuck and fold three sides of said body into contact With the end and form a projecting flap; means for pasting and folding over said flap; and supplemental Wipers mounted on stationary supports in advance, in the direction of movement of the former, of the supports for the main wipers to maintain the fold during the pasting operation and the first part of the folding-over operation.

8l. In a bag-forming machine, the combi-A nation with a number of formers; of means for feeding blanks to said formers successively; means for Wrapping the blanks around "former movable With relation to the main portion thereof; a lever connected With each adjustable portion; and an adjusting member cooperating With-all of said levers.

34. The combination with a plurality of formers mounted on a rotatable carrier; of an adjustable portion of each former; a lever connected with each adjustable portion and mounted on the carrier; a channeled adjusting-collar movable in line with the axis of rotation of the carrier; and an engaging portion of each lever traveling in the channel of said collar.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

LEWIS F. FALES.

Witnesses:

GEORGE A. FALEs, MARGARET C. DALToN. 

